Seiko Cal. 5637 - 671

The Seiko 5637-671 represents an important milestone in Seiko's 1990 lineup. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-2d1cd4e452f7]

Also known as: Samurai, Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1990

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